Chemical Industry and Engineering Progress ›› 2019, Vol. 38 ›› Issue (03): 1476-1481.DOI: 10.16085/j.issn.1000-6613.2018-1838

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Synthesis and self-assembly of amphiphilic ethyl cellulose grafted dehydroabietic moiety polymer

Zenghui CHENG1,2(),Jifu WANG1,Daihui ZHANG1,Chunpeng WANG1,Fuxiang CHU1(),Feng XU2   

  1. 1. Institute of Chemical Industry of Foresty Products, CAF; National Engineering Laboratory of Biomass Chemical Utilization; Key and Laboratory of Forest Chemical Engineering, SFA; Key Laboratory of Biomass Energy and Material,Nanjing 210042, Jiangsu, China
    2. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
  • Received:2018-09-11 Revised:2018-12-11 Online:2019-03-05 Published:2019-03-05
  • Contact: Fuxiang CHU

两亲性乙基纤维素接枝松香聚合物的合成及自组装

程增会1,2(),王基夫1,张代晖1,王春鹏1,储富祥1(),许凤2   

  1. 1. 中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室,江苏 南京210042
    2. 北京林业大学材料科学与技术学院,北京 100083
  • 通讯作者: 储富祥
  • 作者简介:程增会(1986―),女,博士研究生,研究方向为生物质高分子材料。E-mail:chengzenghuia@163.com。|储富祥,研究员,博士生导师,研究方向为生物质高分子材料。E-mail:chufuxiang@caf.ac.cn
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项(CAFYBB2017ZF003)

Abstract:

Novel biomass-based amphiphilic ethyl cellulose grafted 2-methcryloyloxyisopropanol ester of dehydroabietic acid (EC-g-DAGMA) copolymers was synthesized through the RAFT polymerization,and self-assembled micelles were prepared in the selective solvent THF/H2O. The structure and molecular weight of the polymer was characterized by 1H NMR and gel permeation chromatography (GPC),which confirmed the successful synthesis of EC-g-PDAGMA. The amphiphilic copolymers showed an excellent UV absorption ability due to the presence of rosin based side chains. Dynamic light scattering (DLS), zeta-potential measurement and transmission electron microscopy (TEM) were used to study the self-assembly behavior of the EC-g-DAGMA copolymers. The results showed that the EC-g-PDAGMA copolymers could self-assemble to micelles in the selective solvent THF/H2O with regular spherical morphology and good stabilities. Moreover, the diameters of micelles were influenced by the polymer concentration and molecular weights.

Key words: self-assembly, micelles, ethyl cellulose, amphiphilic, particle size distribution

摘要:

通过可逆加成断裂链转移聚合法(RAFT)将脱氢枞酸(2-甲基丙烯酰氧基异丙醇基)酯(DAGMA)单体接枝到乙基纤维素上合成了全生物质基两亲性的乙基纤维素-聚脱氢枞酸(2-甲基丙烯酰氧基异丙醇基)酯共聚物(EC-g-PDAGMA),并制备了聚合物自组装胶束。利用核磁共振氢谱(1H NMR)、凝胶色谱仪(GPC)对聚合物的结构进行了表征,证实成功合成了EC-g-PDAGMA。由于脱氢枞酸的引入,EC-g-PDAGMA接枝共聚物具有明显的紫外吸收性能。利用动态光散射(DLS)和透射电子显微镜(TEM)对聚合物自组装胶束的粒径、胶束溶液的Zeta电位和形貌进行了表征。结果表明,EC-g-PDAGMA共聚物在选择性溶剂THF/H2O中能够进行自组装形成规整的球形胶束,并且其大小随着聚合物浓度和分子链长而变化,粒径分布较窄,同时胶束具有良好的储存稳定性。

关键词: 自组装, 胶束, 乙基纤维素, 两亲性, 粒度分布

CLC Number: 

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